I've just started getting into working out at home. I've never used anything as a fuel for working out so as a newbie, Pump Drivens' performance has been great. I can do 2000 speed ropes in sets of 200 because I have energy and focus where I didn't before. I continue to finish my other exercises in my HIIT program without need for anything but this. I use a PROMIXX Vortex to mix it with water because a shaker bottles don't seem to create the emulsion that I expect to get from powders. Blue Raz is Awsome, has great flavor and the color is consistent. I'd love more if I could afford to drink it I'd probably have it all day and just drink it instead of coffee, seriously worth the try if your wanting something that'll give you "pump"!